4. Optical: systems and elements
  5. Projection screen
  6. Moving during projection

Doug A. Crews

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Accurate, multi-axis, computer-controlled object projection mach

Mechanical guns and projectors – Projectile impelled by coacting wheels
Patent

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Accurate, multi-axis, computer-controlled object projection...

Mechanical guns and projectors – Projectile impelled by coacting wheels
Reexamination Certificate

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Projection screen with movable shutter

Optical: systems and elements – Projection screen – Moving during projection
Reexamination Certificate

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Projection screen with movable shutter

Optical: systems and elements – Projection screen – Moving during projection
Patent

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Profile ID: LFUS-PAI-P-1346078

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